Gaithersburg Population

1900–2026

71,642

2026 projection

3.2% since 2020 (increase)

020K40K60K80K1900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Gaithersburg. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202671,642+5290.74%
202571,113-4320.60%
202471,545+2180.31%
202371,327+5850.83%
202270,742+9091.30%
202169,833+4050.58%
202069,428+1,4162.08%
201968,012-700.10%
201868,082+780.11%
201768,004+3930.58%

Showing 10 of 28 years.

Gaithersburg Demographics

37.8median age

Median age

Female38.2 yrs
Male37.3 yrs

Adults

53,974
9,875 seniors · 18%44,099 other adults

Sex

Female 51.9% · 36,272Male 48.1% · 33,553

Population by age

MaleFemale85+ years, male: 50285+ years, female: 98380–84 years, male: 46580–84 years, female: 80575–79 years, male: 73775–79 years, female: 80870–74 years, male: 95570–74 years, female: 1,11965–69 years, male: 1,35165–69 years, female: 2,15060–64 years, male: 1,53160–64 years, female: 1,77755–59 years, male: 2,01055–59 years, female: 2,28950–54 years, male: 2,41850–54 years, female: 2,22845–49 years, male: 2,17545–49 years, female: 2,73240–44 years, male: 3,23040–44 years, female: 2,52635–39 years, male: 3,03835–39 years, female: 2,94730–34 years, male: 2,61030–34 years, female: 2,77925–29 years, male: 2,14225–29 years, female: 2,23720–24 years, male: 1,68320–24 years, female: 1,99815–19 years, male: 2,13815–19 years, female: 2,11610–14 years, male: 2,21010–14 years, female: 2,2825–9 years, male: 1,9035–9 years, female: 1,9580–4 years, male: 2,4550–4 years, female: 2,53885+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K2K2K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 698 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Gaithersburg Income

$112,467median household income

Median household income

$112,467

Half of households earn more, half earn less

Median earnings

$63,344

Typical yearly pay for a worker 25 or older.

Poverty rate

8.8%

About 1 in 11 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Gaithersburg Marital Status

48% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married48%52%45%
Never married37%39%34%
Divorced10%6%13%
Widowed5%2%7%
Separated1%<1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year